US11920651B2 - Bracket - Google Patents

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Publication number
US11920651B2
US11920651B2 US17/312,936 US201917312936A US11920651B2 US 11920651 B2 US11920651 B2 US 11920651B2 US 201917312936 A US201917312936 A US 201917312936A US 11920651 B2 US11920651 B2 US 11920651B2
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Prior art keywords
bracket
bridging
circumferential side
portions
outer circumferential
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US17/312,936
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US20220042568A1 (en
Inventor
Tadashi Onishi
Masato Kobayashi
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Bridgestone Corp
Prospira Corp
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Prospira Corp
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Assigned to BRIDGESTONE CORPORATION reassignment BRIDGESTONE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOBAYASHI, MASATO, ONISHI, TADASHI
Publication of US20220042568A1 publication Critical patent/US20220042568A1/en
Assigned to PROSPIRA CORPORATION reassignment PROSPIRA CORPORATION ABSORPTION-TYPE COMPANY SPLIT Assignors: BRIDGESTONE CORPORATION
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Publication of US11920651B2 publication Critical patent/US11920651B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3842—Method of assembly, production or treatment; Mounting thereof
    • F16F1/3849—Mounting brackets therefor, e.g. stamped steel brackets; Restraining links

Definitions

  • the present disclosure relates to a bracket that has an opening for attaching an anti-vibration member coupled on one of a vibration generating side and a vibration receiving side and is able to be coupled on the other one of the vibration generating side and the vibration receiving side.
  • bracket in the related art, there is a bracket that is obtained by bonding a reinforcing member to a synthetic resin material and has an outer circumferential surface with a reinforcing rib formed thereon (see PTL 1, for example). According to the bracket described in PTL 1, it is possible to achieve the bracket that exhibits high strength and a high fatigue resistance and thus to improve durability of the bracket by adding the reinforcing rib along with the reinforcing member.
  • Patent Literature 1 leads to an increase in weight by the amount corresponding to the reinforcing rib, and there is room for further improvement.
  • An object of the present disclosure is to provide a bracket that has excellent durability while curbing an increasing in weight.
  • a bracket according to the present disclosure is a bracket that has an opening for attaching an anti-vibration member coupled on one of a vibration generating side and a vibration receiving side and is able to be coupled on the other one of the vibration generating side and the vibration receiving side, in which: the bracket is made of a resin; the bracket is a tubular bracket, which has a pair of column portions arranged with an interval therebetween and a pair of bridging portions arranged between the pair of column portions and coupling the pair of column portions, in which the opening is defined by the pair of column portions and the pair of bridging portions; the bracket includes a plate portion that extends on a bracket outer circumferential side outer side surface of at least one column portion of the pair of column portions all over the column portion in an extending direction of the column portion and that projects in an extending direction of the bridging portions beyond the column portion; and in one bridging portion of the pair of bridging portions, a width of a bracket outer circumferential side outer surface of the one bridging portion in an opening
  • the width of the bracket outer circumferential side outer surface of the one bridging portion in the opening penetrating direction preferably becomes narrower from the extending direction end of the bridging portion toward a center of the bridging portion in the extending direction of the bridging portion in the view in the extending direction of the column portions. In this case, it is possible to curb an increase in weight while securing strength at connecting portions between the column portions and the bridging portions on which a stress is likely to concentrate when a load is input to the bracket.
  • one opening penetrating direction side contour line of a pair of opening penetrating direction side contour lines forming an outline of the bracket outer circumferential side outer surface of the one bridging portion in a side of the opening penetrating direction is preferably a curve having a depression going toward the other opening penetrating direction side contour line of the pair of opening penetrating direction side contour lines from the extending direction end of the bridging portion toward the center of the bridging portion in the extending direction of the bridging portion in the view in the extending direction of the column portions.
  • the other opening penetrating direction side contour line of the bracket outer circumferential side outer surface of the one bridging portion is preferably a curve having a depression going toward the one opening penetrating direction side contour line from the extending direction end of the bridging portion toward the center of the bridging portion in the extending direction of the bridging portion in the view in the extending direction of the column portions.
  • a depth of the depression of the one opening penetrating direction side contour line in the opening penetrating direction is preferably different from a depth of the depression of the other opening penetrating direction side contour line in the opening penetrating direction in the bracket outer circumferential side outer surface of the one bridging portion. In this case, a bracket that has more excellent durability is achieved.
  • the other bridging portion of the pair of bridging portions preferably further includes a flange portion that projects at least from a bracket outer circumferential side outer side surface of the one column portion on an extension of the other bridging portion in the extending direction of the other bridging portion, and the flange portion and the plate portion are preferably coupled to each other.
  • a bracket that has more excellent durability is achieved.
  • the bracket according to the present disclosure preferably further includes a reinforcing portion on the bracket outer circumferential side outer surface of the one bridging portion. In this case, a bracket that has more excellent durability is achieved.
  • the reinforcing portion preferably has an inclined end that is inclined in a tapered manner in a direction from the one bridging portion toward the plate portion in the view in the extending direction of the column portions. In this case, a bracket that has more excellent durability is achieved.
  • the reinforcing portion preferably further extends from the tapered part in the extending direction of the column portions between the plate portions. In this case, a bracket that has more excellent durability is achieved.
  • FIG. 1 is a perspective view schematically illustrating a bracket according to a first embodiment of the present disclosure
  • FIG. 2 is a front view of FIG. 1 ;
  • FIG. 3 is a plan view of FIG. 1 ;
  • FIG. 4 A is a sectional view along A-A in FIG. 2 ;
  • FIG. 4 B is a sectional view along B-B in FIG. 2 ;
  • FIG. 5 is a sectional view along C-C in FIG. 2 ;
  • FIG. 6 is a perspective view schematically illustrating a bracket according to a second embodiment of the present disclosure.
  • FIG. 1 is a perspective view schematically illustrating a bracket 1 A according to a first embodiment of the present disclosure.
  • the bracket 1 A has an opening A for attaching an anti-vibration member coupled on one of a vibration generating side and a vibration receiving side and is able to be coupled on the other one of the vibration generating side and the vibration receiving side.
  • the bracket 1 A is an engine mount bracket.
  • Examples of the vibration generating side and the vibration receiving side are an engine and a vehicle body.
  • one of the vibration generating side and the vibration receiving side can be the engine.
  • examples of the anti-vibration member include an anti-vibration device that couples an inner cylinder to an outer cylinder with an elastic body (rubber, for example), and the inner cylinder is connected to the engine. In FIG. 1 , the anti-vibration member is omitted.
  • the other one of the vibration generating side and the vibration receiving side can be the vehicle body. In this case, the bracket 1 A can be fixed to the vehicle body as will be described later.
  • the bracket 1 A is made of a resin.
  • the bracket 1 A can be integrally formed through injection molding, for example.
  • the bracket 1 A includes a bracket main body 10 made of a resin and a reinforcing portion 20 .
  • the bracket main body 10 can be integrally formed through injection molding, for example, with the reinforcing portion 20 as an insert article.
  • the resin include a thermoplastic synthetic resin and a thermosetting synthetic resin.
  • the thermoplastic synthetic resin is suitably used as the synthetic resin. Examples of such a thermoplastic synthetic resin include 6-6 nylon, 6 nylon, and polypropylene.
  • the bracket 1 A is a tubular bracket. As illustrated in FIG. 2 , the bracket 1 A has a pair of column portions 11 arranged with an interval therebetween and a pair of bridging portions 12 arranged between the two column portions 11 and coupling the two column portions 11 . In this manner, the opening A is defined by the pair of column portions 11 and the pair of bridging portions 12 .
  • the bracket main body 10 has the two column portions 11 and the two bridging portions 12 .
  • the two column portions 11 are formed as plate portions extending in parallel to each other.
  • the column portions 11 when the bracket 1 A is fixed to the vehicle body, for example, the column portions 11 extend in the up-down direction and form side portions of the bracket main body 10 (bracket 1 A).
  • bracket outer circumferential side outer side surfaces 11 f 1 of the column portions 11 form parts of an outer circumferential surface of the bracket main body 10 .
  • the bracket outer circumferential side outer side surfaces 11 f 1 of the column portions 11 form an outer circumferential side surface of the bracket main body 10 .
  • bracket outer circumferential side outer surfaces 12 f 1 of the bridging portions 12 also form parts of the outer circumferential surface of the bracket main body 10 .
  • the bracket main body 10 has a first bridging portion 121 and a second bridging portion 122 as the two bridging portions 12 .
  • the first bridging portion 121 is located on the upper side and forms a part of an upper portion of the bracket main body 10 (bracket 1 A).
  • the second bridging portion 122 is located on the lower side and forms a part of a lower portion of the bracket main body 10 (bracket 1 A).
  • a bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 forms an outer circumferential upper surface of the bracket main body 10 along with a bracket outer circumferential side outer upper surface 11 f 3 of the column portion 11 as illustrated in FIG. 2 .
  • a bracket outer circumferential side outer surface 122 f 1 of the second bridging portion 122 forms an outer circumferential lower surface of the bracket main body 10 along with a bracket outer circumferential side outer lower surface 11 f 4 of the column portion 11 .
  • the bracket 1 A includes, on the bracket outer circumferential side outer side surface 11 f 1 of at least one column portion 11 (both column portions 11 in the present embodiment) of the pair of column portions 11 , a plate portion 13 that extends all over the column portion 11 in the extending direction of the column portion 11 and projects in the extending direction of the bridging portions 12 beyond the column portion 11 .
  • the extending direction of the column portions 11 when the bracket 1 A is fixed to the vehicle body is the up-down direction.
  • the extending direction of the bridging portions 12 when the bracket 1 A is fixed to the vehicle body for example, is the horizontal direction.
  • the extending direction of the bridging portions 12 is at least any one direction of a vehicle front-back direction and a vehicle left-side direction (vehicle width direction).
  • the extending direction of the bridging portions 12 is the vehicle front-back direction.
  • the plate portions 13 form parts of the bracket main body 10 by projecting from the column portions 11 .
  • the bracket main body 10 has two plate portions 13 as the plate portions 13 .
  • a width W 1 of the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 in an opening penetrating direction is maximum at an extending direction end 12 e of the bridging portion 12 on the side of the one column portion 11 in a view in the extending direction of the column portions 11 .
  • the opening penetrating direction is a direction in which the opening A penetrates.
  • a center axis O 1 of the opening A is parallel to the opening penetrating direction.
  • the extending direction end 12 e of the bridging portion 12 conforms to a bracket inner circumferential side inner side surface 11 f 2 of the column portion 11 in the extending direction of the bridging portions 12 .
  • the width W 1 of the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 in the opening penetrating direction is maximum at an extending direction end 121 e of the first bridging portion 121 on the side of the one column portion 11 such that an area of the bracket outer circumferential side outer surface 121 f 1 decreases between the extending direction ends 121 e in the extending direction of the bridging portions 12 .
  • the width W 1 of the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 in the opening penetrating direction decreases between the extending direction ends 121 e in the extending direction of the bridging portions 12 in the present embodiment.
  • an outline of the bracket circumferential side outer surfaces 12 f 1 of the bridging portions 12 in a side of the opening penetrating direction is formed by a pair of opening penetrating direction side contour lines L 1 and L 2 in the view in the extending direction of the column portions 11 in the bracket 1 A according to the present embodiment as illustrated in FIG. 3 .
  • the width W 1 of the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 in the opening penetrating direction is a width in the opening penetrating direction between the first opening penetrating direction side contour line (hereinafter, referred to as a “first opening penetrating direction side contour line”) L 1 and the second opening penetrating direction side contour line (hereinafter, referred to as a “second opening penetrating direction side contour line”) L 2 .
  • first opening penetrating direction side contour line first opening penetrating direction side contour line
  • second opening penetrating direction side contour line hereinafter, referred to as a “second opening penetrating direction side contour line”
  • an opening penetrating direction width W 1 c at the center of the first bridging portion 121 in the extending direction of the bracket outer circumferential side outer surface 121 f 1 is minimum, and an opening penetrating direction width W 1 e at the extending direction end 121 e of the first bridging portion 121 is maximum in the present embodiment.
  • FIG. 4 A is a sectional view along A-A in FIG. 2 .
  • FIG. 4 B is a sectional view along B-B in FIG. 2 .
  • FIG. 5 is a sectional view along C-C in FIG. 2 .
  • a width Wb of a bracket inner circumferential side inner surface 12 f 2 of the one bridging portion 12 in the opening penetrating direction is longer than the width W 1 of the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 in the opening penetrating direction as illustrated in FIGS. 4 A and 4 B .
  • each of an opening penetrating direction one end side outer surface 12 f 3 and an opening penetrating direction other end side outer surface 12 f 4 of the one bridging portion 12 is an inclined surface that is inclined toward the center in the opening penetrating direction toward the bracket outer circumferential side (the vehicle upper side after attachment to the vehicle in the present embodiment) in the extending direction of the column portions 11 in a view in the extending direction of the bridging portions 12 as illustrated in FIGS. 4 A and 4 B .
  • one bridging portion 12 has a bracket outer circumferential side part 12 a , a bracket inner circumferential side part 12 b , and a separating part 12 c and ribs 12 r that couple the bracket outer circumferential side part 12 a to the bracket inner circumferential side part 12 b as illustrated in FIG. 2 .
  • the bracket outer circumferential side part 12 a and the bracket inner circumferential side part 12 b are arranged with an interval in the extending direction of the column portions 11 .
  • the bracket outer circumferential side part 12 a and the bracket inner circumferential side part 12 b extend in the extending direction of the bridging portion 12 .
  • the separating part 12 c is coupled to the bracket inner circumferential side inner side surfaces 11 f 2 of the column portions 11 along with the bracket outer circumferential side part 12 a and the bracket inner circumferential side part 12 b .
  • a plurality of ribs 12 r arranged at intervals in the extending direction of the bridging portion 12 are included as the ribs 12 r .
  • Each of the ribs 12 r is coupled to the separating part 12 c along with the bracket outer circumferential side part 12 a and the bracket inner circumferential side part 12 b . As illustrated in FIGS.
  • one bridging portion 12 has, as the ribs 12 r , a plurality of opening penetrating direction one end side ribs 12 r 3 and a plurality of opening penetrating direction other end side ribs 12 r 4 with the separating part 12 c interposed therebetween.
  • the opening penetrating direction one end side outer surface 12 f 3 of the first bridging portion 12 is formed with an inclined surface.
  • the opening penetrating direction other end side outer surface 12 f 4 of the bridging portion 12 is also formed with an inclined surface.
  • the first bridging portion 121 has a bracket outer circumferential side part 121 a , a bracket inner circumferential side part 121 b , and a separating part 121 c and ribs 121 r that couple the bracket outer circumferential side part 121 a and the bracket inner circumferential side part 121 b as illustrated in FIG. 2 .
  • FIGS. 1-10 illustrate a bracket outer circumferential side part 121 a , a bracket inner circumferential side part 121 b , and a separating part 121 c and ribs 121 r that couple the bracket outer circumferential side part 121 a and the bracket inner circumferential side part 121 b as illustrated in FIG. 2 .
  • the first bridging portion 121 has, as the ribs 121 r , a plurality of opening penetrating direction one end side ribs 121 r 3 and a plurality of opening penetrating direction other end side ribs 121 r 4 with the separating part 121 c interposed therebetween in the present embodiment.
  • an opening penetrating direction one end side outer surface 121 f 3 of the first bridging portion 121 is formed with inclined surfaces of the opening penetrating direction one end side ribs 121 r 3 in the present embodiment.
  • an opening penetrating direction other end side outer surface 121 f 4 of the first bridging portion 121 is formed with inclined surfaces of the opening penetrating direction other end side ribs 121 r 4 in the present embodiment.
  • the bracket outer circumferential side outer side surface 11 f 1 of at least one column portion 11 can be provided with the plate portion 13 , the plate portion 13 can be caused to extend in over the extending direction of the column portion 11 and project in the extending direction of the bridging portion 12 beyond the column portion 11 as illustrated in FIG. 2 , for example.
  • the width W 1 of the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 in the opening penetrating direction is maximum at the extending direction end 12 e of the bridging portion 12 in a view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the width W 1 of the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 in the opening penetrating direction is the maximum value W 1 e , it is possible to secure strength at connecting portions between the column portions 11 and the bridging portions 12 on which a stress is likely to concentrate when a load is input to the bracket 1 A.
  • the one bridging portion 12 is the first bridging portion 12 arranged on the upper side when the bracket 1 A is fixed to the vehicle body.
  • bracket 1 A of the present embodiment a bracket that has excellent durability while curbing an increase in weight is achieved.
  • a width Wb of the bracket inner circumferential side inner surface 12 f 2 of the bridging portion 12 in the opening penetrating direction is longer than the width W 1 of the bracket outer circumferential side outer surface 12 f 1 of the bridging portion 12 in the opening penetrating direction in the bracket 1 A according to the embodiment. It is thus possible to secure a large bonding force to the elastic body that couples the anti-vibration member to the bracket 1 A.
  • an increase in gravity of the bridging portion 12 is curbed by the opening penetrating direction one end side outer surface 12 f 3 and the opening penetrating direction other end side outer surface 12 f 4 of the bridging portion 12 forming inclined surfaces. Therefore, it is possible to secure higher strength of the bridging portion 12 as compared with a case in which the volume of the bridging portion 12 is reduced from the bracket outer circumferential side outer surface 12 f 1 to the bracket inner circumferential side inner surface 12 f 2 of the bridging portion 12 in accordance with the bracket outer circumferential side outer surface 12 f 1 of the bridging portion 12 .
  • the width W 1 of the bracket outer circumferential side outer surface 12 f of the one bridging portion 12 in the opening penetrating direction becomes narrower from the extending direction end 12 e of the bridging portion 12 toward the center C of the bridging portion 12 in the extending direction of the bridging portion 12 in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the center C of the bridging portion 12 in the extending direction of the bridging portion 12 is a position at which the length of the bridging portion 12 in the extending direction of the bridging portion 12 is equally divided into two in the view in the extending direction of the column portions 11 in the bracket 1 A according to the present embodiment.
  • the center C of the bridging portion 12 in the extending direction of the bridging portion 12 conforms to the center axis O 1 of the opening A in the view in the extending direction of the column portions 11 in the present embodiment.
  • the width W 1 of the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 in the opening penetrating direction becomes narrower from the extending direction end 121 e of the first bridging portion 121 toward the center C of the first bridging portion 121 in the extending direction of the first bridging portion 121 in the view in the extending direction of the column portions 11 .
  • the opening penetrating direction side contour line L 1 or L 2 that is one of the pair of opening penetrating direction side contour lines L 1 and L 2 forming the outline of the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 in the side of the opening penetrating direction is preferably a curve having a depression going toward the opening penetrating direction side contour line L 2 or L 1 that is the other one of the two opening penetrating direction side contour lines L 1 and L 2 from the extending direction end 12 e of the bridging portion 12 toward the center C of the bridging portion 12 in the extending direction of the bridging portion 12 in the view in the extending direction of the column portions 11 .
  • the first opening penetrating direction side contour line L 1 of the pair of opening penetrating direction side contour lines L 1 and L 2 forming the outline of the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 in the side of the opening penetrating direction is a curve having a depression going toward the second opening penetrating direction side contour line L 2 from the extending direction end 121 e of the bridging portion 121 toward the center C of the bridging portion 121 in the extending direction of the bridging portion 12 in the view in the extending direction of the column portions 11 .
  • the first opening penetrating direction side contour line L 1 is formed with two curves extending in the extending direction of the bridging portion 12 from the extending direction end 121 e of the first bridging portion 121 on the side of the first opening penetrating direction side contour line L 1 and a straight line connecting the two curves.
  • each of the two curves is a curve formed with a radius of curvature r 1 .
  • the straight line is a straight line extending in the extending direction of the bridging portion 12 and extends to a location near the center C of the bridging portion 12 in the extending direction of the bridging portion 12 .
  • the first opening penetrating direction side contour line L 1 of the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 is a curve having a depression, it is possible to curb an increase in weight while curbing stress concentration that may be caused on the first opening penetrating direction side contour line L 1 where there are many weld lines, that is strength degraded sites, formed at portions where resin flows separate from and meet each other during injection molding, by smoothly reducing the width W 1 in the opening penetrating direction.
  • the other one of the pair of opening penetrating direction side contour lines L 1 and L 2 of the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 is preferably a curve having a depression going toward the one of the opening penetrating direction side contour lines L 1 or L 2 from the extending direction end 12 e of the bridging portion 12 toward the center C of the bridging portion 12 in the extending direction of the bridging portion 12 in the view in the extending direction of the column portions 11 .
  • the second opening penetrating direction side contour line L 2 of the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 is a curve having a depression going toward the first opening penetrating direction side contour line L 1 from the extending direction end 121 e of the first bridging portion 121 toward the center C of the bridging portion 121 in the extending direction of the bridging portion 12 in the view in the extending direction of the column portions 11 .
  • the second opening penetrating direction side contour line L 2 is formed with two curves extending in the extending direction of the bridging portion 12 from the extending direction end 121 e of the first bridging portion 121 on the side of the second opening penetrating direction side contour line L 2 and a straight line connecting the two curves.
  • each of the two curves is a curve formed with a radius of curvature r 2 .
  • the straight line is a straight line extending in the extending direction of the bridging portion 12 and extends to a location near the center C of the bridging portion 12 in the extending direction of the bridging portion 12 .
  • the second opening penetrating direction side contour line L 2 of the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 is a curve having a depression, it is possible to curb an increase in weight while curbing stress concentration that may be caused on the second opening penetrating direction side contour line L 2 , by smoothly reducing the width W 1 in the opening penetrating direction.
  • a depth D of the depression of the first opening penetrating direction side contour line L 1 in the opening penetrating direction of the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 is preferably different from a depth D of the depression of the second opening penetrating direction side contour line L 2 in the opening penetrating direction in the view in the extending direction of the column portions 11 .
  • the weld line WL of the bracket is preferably formed to avoid a position to which a large load is applied during utilization of the bracket.
  • the position of the weld line WL is uniquely determined. In this case, it is difficult to control the weld line WL to avoid stress concentration since a change in the injection gate position is limited.
  • the weld line WL of the bracket 1 A is a weld line WL extending in the extending direction of the bridging portions 12 in the view in the extending direction of the column portions 11 as illustrated in FIG. 5 in the bracket 1 A according to the present embodiment
  • the weld line WL can be formed at a position near the opening penetrating direction side contour line L 1 or L 2 on a side on which the depth D in the opening penetrating direction is shallow if the depth D of one of the opening penetrating direction side contour lines L 1 and L 2 in the opening penetrating direction is caused to be different from the depth D of the other one of the opening penetrating direction side contour lines L 1 and L 2 in the opening penetrating direction in the view in the extending direction of the column portion 11 as illustrated in FIG. 3 .
  • the depth D of the one opening penetrating direction side contour line L 1 of the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 in the opening penetrating direction is shallower than the depth D of the other opening penetrating direction side contour line L 2 in the opening penetrating direction in the view in the extending direction of the column portions 11 in the bracket 1 A according to the present embodiment.
  • a depth D 1 of the first opening penetrating direction side contour line L 1 in the opening penetrating direction of the bracket outer circumferential side outer surface 121 f of the first bridging portion 121 is shallower than the depth D 2 of the second opening penetrating direction side contour line L 2 in the opening penetrating direction.
  • the depth D 1 of the first opening penetrating direction side contour line L 1 in the opening penetrating direction is the depth D 1 in the opening penetrating direction between an opening extending direction one side end 12 b 1 of a bracket inner circumferential side part 12 b of the one bridging portion 12 and the opening penetrating direction side contour line L 1 of the one bridging portion 12 in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the depth D 2 of the second opening penetrating direction side contour line L 2 in the opening penetrating direction is a depth in the opening penetrating direction between an opening extending direction other side end 12 b 2 of the bracket inner circumferential side part 12 b of the one bridging portion 121 and the opening penetrating direction side contour line L 2 of the one bridging portion 12 in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the depth D 1 of the first opening penetrating direction side contour line L 1 in the opening penetrating direction is the deepest at the center C of the bridging portion 12 in the extending direction of the bridging portion 12 in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the depth D 2 of the second opening penetrating direction side contour line L 2 in the opening penetrating direction is also the deepest at the center C of the bridging portion 12 in the extending direction of the bridging portion 12 in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the maximum value D 1 max of the depth D 1 in the opening penetrating direction and the maximum value D 2 max of the depth D 2 in the opening penetrating direction are different from each other.
  • the maximum value D 1 max of the depth D 1 in the opening penetrating direction is shallower than the maximum value D 2 max of the depth D 2 in the opening penetrating direction.
  • the weld line WL tends to be formed on the side on which the depth D in the opening penetrating direction is shallow in the present embodiment as illustrated in FIG. 5 .
  • an external force applied to the bridging portions typically acts on a center line LO in the bracket width direction along the center line LO in the bracket width direction in a view in the extending direction of the column portions at the bridging portions of the bracket as illustrated in FIG. 5 .
  • the center line LO in the bracket width direction is a straight line that is parallel to the extending direction of the bridging portions 12 and is a straight line passing through the center of the width of the bridging portions 12 (the bracket main body 10 (bracket 1 A) in the present embodiment) in the opening penetrating direction.
  • the weld line WL is formed on the side of the first opening penetrating direction side contour line L 1 on which the depth D in the opening penetrating direction is shallow as illustrated in FIG. 5 .
  • the other bridging portion 12 of the pair of bridging portions 12 preferably further includes, on an extension of the other bridging portion 12 in the extending direction of the other bridging portion 12 , flange portions 14 projecting from the bracket outer circumferential side outer side surfaces 11 f 1 of the column portions 11 , and the flange portions 14 and the plate portions 13 are preferably coupled to each other.
  • the second bridging portion 122 that serves as the other bridging portion 12 further includes, on the extension of the second bridging portion 122 in the extending direction of the other bridging portion 12 , the flange portion 14 projecting from the bracket outer circumferential side outer side surface 11 f 1 of the column portion 11 .
  • the plate portions 13 are coupled to the flange portion 14 .
  • the plate portions 13 form parts of the bracket main body 10 by being coupled to the flange portion 14 along with the column portion 11 . In this case, a bracket with more excellent durability is achieved.
  • the bracket main body 10 has two flange portions 14 , each of which serves as the flange portion 14 . In this case, a bracket with more excellent durability is achieved.
  • the flange portions 14 have fixing portions 15 for fixing the bracket 1 A to the vehicle body as illustrated in FIG. 3 and the like.
  • the fixing portions 15 are seat portions that have openings that cause fastening elements such as bolts to penetrate therethrough.
  • a bracket outer circumferential side side edges 13 e of the plate portions 13 extend in the extending direction of the bridging portions 12 so as to cover and hide the fixing portions 15 of the flange portions 14 in the opening penetrating direction in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the bracket outer circumferential side side edges 13 e of the plate portions 13 extend up to positions exceeding the fixing portions 15 in the extending direction of the bridging portions 12 in the view in the extending direction of the column portions 11 .
  • the bracket outer circumferential side side edges 13 e of the plate portions 13 extend to positions that conform to bracket outer circumferential side side edges 14 e of the flange portions 14 as illustrated in FIG. 5 .
  • the plate portions 13 are formed with a first contour line L 131 and a second contour line L 132 to which the first contour line L 131 is connected in a view in the opening penetrating direction as illustrated in FIG. 2 .
  • the first contour line L 131 is a curve that is connected to the one bridging portion 12 (first bridging portion 121 ) with a radius of curvature R 13 .
  • the second contour line L 132 is a straight line extending in the extending direction of the column portions 11 (vehicle up-down direction).
  • the bracket 1 A preferably includes a reinforcing portion 20 on the bracket outer circumferential side outer surface 12 f 1 of the one bridging portion 12 .
  • the bracket 1 A includes the reinforcing portion 20 on the bracket outer circumferential side outer surface 121 f 1 of the first bridging portion 121 as illustrated in FIG. 2 .
  • the reinforcing portion 20 is a compound material with strength enhanced by containing a synthetic resin in a fibrous element, that is, a so-called fiber reinforced plastic (FRP).
  • FRP fiber reinforced plastic
  • the fiber reinforced plastic include prepreg.
  • the fibrous element include a glass fiber fabric, a carbon fiber fabric, a metal fiber fabric, an organic fabric, and a fiber fabric with higher bending strength than the bracket main body 10 , and the like.
  • the glass fiber fabric is suitably used as the fibrous element.
  • examples of the fiber reinforced plastic include a uni-direction (UD) material containing a synthetic resin in a fibrous element with directionality.
  • examples of the fibrous element include a glass fiber, a carbon fiber, a metal fiber, an organic fiber, a fiber with higher bending strength than the bracket main body 10 , fabrics thereof, and the like.
  • the bracket 1 A can be integrally formed through injection molding with the reinforcing portion 20 as an insert article, for example.
  • the bridging portion 12 is a portion where a load of receiving the reinforcing portion 20 on the outer circumferential side of the bracket 1 A is a minimum necessary load when a load is input to the bracket 1 A. Therefore, if the bracket outer circumferential side outer surface 12 f 1 of the bridging portion 12 is provided with the reinforcing portion 20 as in the present embodiment, it is possible to reinforce the bracket 1 A (bracket main body 10 ) with the reinforcing portion 20 without providing the plate portions 13 at a location where the load of receiving the reinforcing portion 20 on the outer circumferential side of the bracket 1 A is a minimum necessary load when a load is input to the bracket 1 A. In this case, the bracket 1 A becomes a bracket with more excellent durability.
  • the reinforcing portion 20 preferably has inclined ends 20 e 1 inclined in a tapered manner in a direction from the one bridging portion 12 toward the plate portions 13 in the view in the extending direction of the column portions 11 in the bracket 1 A.
  • the bracket 1 A includes, as the plate portions 13 , a plurality of plate portions 13 arranged at an interval in the opening penetrating direction.
  • each of the two column portions 11 is provided with two plate portions 13 .
  • the reinforcing portion 20 has the inclined ends 20 e 1 inclined in a tapered manner in the direction from the one bridging portion 12 toward the plate portions 13 in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the inclined ends 20 e 1 of the reinforcing portion 20 are a pair of opening penetrating direction side contour lines L 3 and L 4 forming the opening penetrating direction side outline of the reinforcing portion 20 in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the inclined ends 20 e 1 of the reinforcing portion 20 form tapered parts 20 a at the reinforcing portion 20 as parts of the reinforcing portion 20 .
  • Each of the two opening penetrating direction side contour lines L 3 and L 4 is inclined by an angle ⁇ with respect to the center line LO in the bracket width direction in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the angle ⁇ is an acute angle inclined toward the center line LO in the bracket width direction from the column portion 11 toward the bridging portion 12 in the view in the extending direction of the column portions 11 as illustrated in FIG. 3 .
  • the angle ⁇ is preferably 60° or less. More preferably, the angle ⁇ is 10° or more and 45° or less. Further preferably, the angle ⁇ is 10° or more and 40° or less.
  • the angle ⁇ can be appropriately set in accordance with the shape, the material, and the purpose of utilization of the bracket 1 A.
  • bracket 1 A As a method for manufacturing the bracket 1 A, there is a method of performing injection molding with a fiber member as described above as an insert article. According to the method, it is possible to insert-mold the bracket 1 A with the reinforcing portion 20 provided on the outer circumferential surface side of the bracket main body 10 .
  • the reinforcing portion 20 such as prepreg typically has higher rigidity than a base material resin forming the bracket main body 10 . Therefore, stress concentration may occur on the base material resin near ends of the reinforcing portion 20 (a boundary line between the base material resin forming the bracket main body 10 and the fiber member forming the reinforcing portion 20 ) when a large load is input to the bracket 1 A after the insertion molding, and an efficient reinforcing effect may not be able to be obtained.
  • the extending direction ends of the bridging portions 12 of the reinforcing portion 20 are inclined mainly with respect to a tensile stress generation direction (the extending direction of the bridging portions 12 in the present embodiment) by forming the inclined ends 20 e 1 inclined in a tapered manner in the direction from the bridging portion 12 toward the plate portions 13 at the reinforcing portion 20 in the view in the extending direction of the column portions 11 .
  • the inclined ends 20 e 1 of the reinforcing portion 20 are preferably provided on both sides of the reinforcing portion 20 in the opening penetrating direction in a case in which a plurality of plate portions 13 arranged with an interval in the opening penetrating direction are included as the plate portions 13 as in the present embodiment.
  • any one of the two opening penetrating direction side contour lines L 3 and L 4 may be provided with the inclined end 20 e 1 of the reinforcing portion 20 .
  • the reinforcing portion 20 preferably extends from the tapered parts 20 a in the extending direction of the column portions 11 between the plate portions 13 in the bracket 1 A.
  • a portion 20 c of the reinforcing portion 20 extends in the extending direction of the column portions 11 between the tapered part 20 a and the plate portion 13 .
  • 20 c is an extended portion connected to the tapered part 20 a of the reinforcing portion 20 .
  • the reinforcing portion 20 is a belt-shaped member.
  • the reinforcing portion 20 includes the tapered parts 20 a and the extended portions 20 c.
  • FIG. 6 is a perspective view schematically illustrating a bracket 1 B according to a second embodiment of the present disclosure.
  • the same reference signs will be applied to portions with substantially the same configurations as those of the bracket 1 A, and description thereof will be omitted.
  • a reinforcing portion 20 has vertical ends 20 e 2 at which the width W 1 in the opening penetrating direction changes in a stepwise manner (to be parallel to the center axis O 1 of the opening A in the view in the extending direction of the column portions 11 ) from one bridging portion 12 toward plate portions 13 in the view in the extending direction of the column portions 11 instead of the inclined ends 20 e 1 .
  • the vertical ends 20 e 2 of the reinforcing portion 20 are a pair of opening penetrating direction side contour lines L 5 forming a part of the outline of the reinforcing portion 20 on the side of the extending direction of the bridging portion 12 as illustrated in FIG. 6 .
  • each of the two opening penetrating direction side contour lines L 5 extends in parallel with the opening penetrating direction (the center axis O 1 of the opening A).
  • the reinforcing portion 20 is a belt-shaped member in the present embodiment as well.
  • the reinforcing portion 20 includes the step portions 20 b and the extended portions 20 c.
  • brackets 1 A and 1 B that have excellent durability while curbing an increase in weight.
  • the shape of the opening A in the brackets 1 A and 1 B is a rectangular shape in a view in the opening penetrating direction, the shape may be an oval shape or a perfect circular shape.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
US17/312,936 2018-12-20 2019-11-18 Bracket Active 2040-12-23 US11920651B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2018-238381 2018-12-20
JP2018238381A JP7258539B2 (ja) 2018-12-20 2018-12-20 ブラケット
PCT/JP2019/045141 WO2020129514A1 (fr) 2018-12-20 2019-11-18 Tasseau

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US20220042568A1 US20220042568A1 (en) 2022-02-10
US11920651B2 true US11920651B2 (en) 2024-03-05

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US17/312,936 Active 2040-12-23 US11920651B2 (en) 2018-12-20 2019-11-18 Bracket

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US (1) US11920651B2 (fr)
EP (1) EP3885602A4 (fr)
JP (1) JP7258539B2 (fr)
CN (1) CN113227600B (fr)
WO (1) WO2020129514A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP7444758B2 (ja) * 2020-10-28 2024-03-06 株式会社プロスパイラ 防振装置用ブラケット

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EP2706257A2 (fr) 2012-09-05 2014-03-12 Cooper-Standard Automotive, Inc. Ensemble de montage hydraulique amorti de manière axiale
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CN101031734A (zh) 2004-09-29 2007-09-05 株式会社普利司通 防振装置
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JP2010001909A (ja) 2008-06-18 2010-01-07 Bridgestone Corp 防振装置
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Publication number Publication date
EP3885602A4 (fr) 2022-10-05
JP7258539B2 (ja) 2023-04-17
JP2020101209A (ja) 2020-07-02
WO2020129514A1 (fr) 2020-06-25
EP3885602A1 (fr) 2021-09-29
US20220042568A1 (en) 2022-02-10
CN113227600A (zh) 2021-08-06
CN113227600B (zh) 2022-12-16

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